Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc99ebcc648e4cb7…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 12:13:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 623ff4ec57400178caf80c022617f898 SHA-1: 8bbc410b9d478da6b046cfcf6bd957bff73f50f8 SHA-256: bc99ebcc648e4cb753a36d841e38770edabf1cde113d36b0dece8488817b9fb6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it links to a game hack redirector, specifically targeting users interested in 'Roblox Free Item Codes'. The document body and embedded URLs reinforce this lure, directing users to malicious domains that likely host further malware or phishing content. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit user interest in game cheats to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/roblox-free-item-codes-game-hack PDF link annotation
    • http://ilifemarket.ru/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000334c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x334C 24392 bytes
SHA-256: 2c7ed7d9490ccca9a31aed85cdbb3c91b76e6add1cd493511e957e6569270dfe
font_01_sfnt_off00006b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B64 18488 bytes
SHA-256: c72c233e0477db5c15587e2c1e6f96ab3255d21c2f787dab6c27132f5893b73f

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